The idea behind fasted cardio is that you exercise first thing in the morning before you eat anything in order to burn fat instead of glycogen. The concept is sound but let's take a look at the science behind it to see if it actually works.

You start a new diet or exercise program…You’re being consistent, disciplined, and motivated. You’re following your program like an A-student and doing everything ‘right’. But for some reason the weight just doesn’t melt away.